# Verify conditions
if [ ! -z $UID ] && [ $UID -ne 0 ]; then
    echo Superuser privileges are required to run this script.
    exit 1
fi

ping -c 1 -W 1 8.8.8.8 > /dev/null 2>&1
if [ $? -ne 0 ]; then
    ping -c 1 -W 1 www.baidu.com > /dev/null 2>&1
    if [ $? -ne 0 ]; then
        echo Network unreachable.
        exit 1
    fi
fi

if [ -d "/usr/share/dotnet" ]; then
    echo .net environment conflicts. Please remove the environments installed by 'apt install'.
    exit 1
fi

# Remove files of legacy installation
if [ -d "/opt/dotnet" ]; then
    rm -rf /opt/dotnet
    echo /opt/dotnet removed.
fi

if [ ! -z `cat /etc/environment | grep DOTNET_ROOT=` ]; then
    sed -i '/^DOTNET_ROOT=/d' /etc/environment
    echo /etc/environment reverted.
fi

if [ -f "/etc/profile.d/dotnet-core.sh" ]; then
    rm -f /etc/profile.d/dotnet-core.sh
    echo /etc/profile.d/dotnet-core.sh removed.
fi

if [ -f "/etc/profile.d/dotnet.sh" ]; then
    rm -f /etc/profile.d/dotnet.sh
    echo /etc/profile.d/dotnet.sh removed.
fi

# Remove install lock
if [ -f "/var/lib/apt/lists/lock" ] || [ -f "/var/lib/dpkg/lock" ] || [ -f "/var/lib/dpkg/lock-frontend" ] || [ -f "/var/cache/apt/archives/lock" ]; then
    echo The apt system may be locked. Trying to unlock.
    apt update
    rm -f /var/lib/apt/lists/lock
    rm -f /var/lib/dpkg/lock
    rm -f /var/lib/dpkg/lock-frontend
    rm -f /var/cache/apt/archives/lock
fi

# Update apt
apt update

# Install .net
if [ ! -d "/usr/share/dotnet-manually-installed/shared/Microsoft.NETCore.App/8.0.11" ]; then
    DOTNETCORE_PACKAGE=dotnet-runtime-8.0.11-linux-arm64.tar.gz
    if [ ! -f $DOTNETCORE_PACKAGE ]; then
        echo $DOTNETCORE_PACKAGE not found.
        exit 1
    fi

    mkdir -p /usr/share/dotnet-manually-installed
    tar zxvf $DOTNETCORE_PACKAGE -C /usr/share/dotnet-manually-installed
    chmod 777 -R /usr/share/dotnet-manually-installed
    
    apt install -y libc6 libgcc1 libgcc-s1 libgssapi-krb5-2 libicu70 liblttng-ust1 libssl3 libstdc++6 libunwind8 zlib1g libgdiplus
fi

if [ -z `cat /etc/environment | grep DOTNET_ROOT=` ]; then
    echo 'DOTNET_ROOT=/usr/share/dotnet-manually-installed' | tee -a /etc/environment
fi

if [ ! -f "/etc/profile.d/dotnet-manually-installed.sh" ]; then
    mkdir -p /etc/profile.d
    echo -e 'export PATH=$PATH:$DOTNET_ROOT:$HOME/.dotnet/tools' > /etc/profile.d/dotnet-manually-installed.sh
fi

if [ ! -f "/etc/environment.d/dotnet-asc.conf" ]; then
    mkdir -p /etc/environment.d
    echo 'COMPlus_EnableAlternateStackCheck=1' > /etc/environment.d/dotnet-asc.conf
fi

# Install other software
apt install -y libsqlite3-0 libwebkit2gtk-4.0-37 libpython3-dev python3-pip

# Install OpenCV
OPENCV_PACKAGE=OpenCV410-ArmUbuntu2204.zip
if [ -f $OPENCV_PACKAGE ]; then
    apt install -y libopenexr25 libdc1394-25 ffmpeg
    unzip -o -d / ./$OPENCV_PACKAGE
fi

echo Done.
